50 Cent Didn’t Sign Birth Certificate

50 Cent didn’t father a child with ex-GF Daphne Joy — the woman he allegedly attacked during a domestic violence incident last month — at least according to the child’s birth certificate … but the document doesn’t rule out 50 either. Not even close.

TMZ obtained the certificate — which shows Daphne is the mom — but it doesn’t list a father. The daddy field is blank, which means one of two things … A) Daphne didn’t know who the dad was, or B) she didn’t want to say.

But all clues still point to 50 being the dad — namely, the child’s last name is listed as Jackson … as in Curtis Jackson, aka 50 Cent.

As we reported, neither 50 nor Daphne have ever acknowledged the child is his … but the L.A. City Attorney’s Office kinda let the cat out of the bag when it announced the domestic violence charges against 50, saying he and Daphne had a “child in common.”

Oh some real isht, Daphne got off easy. She may have had $7,000 worth of stuff destroyed, but it beats the hell out of your house burning down.